| 钴铝复合氧化物负载金催化剂的制备及催化分解N2O |
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| 引用本文： | 徐晓玲,徐秀峰,张国涛,牛宪军.钴铝复合氧化物负载金催化剂的制备及催化分解N2O[J].燃料化学学报,2009,37(5):595-600. |
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| 作者姓名： | 徐晓玲 徐秀峰 张国涛 牛宪军 |
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| 作者单位： | Institute of Applied Catalysis, Yantai University, Yantai 264005, China |
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| 基金项目： | 教育部留学回国人员科研启动基金(2004-527);;中国科学院山西煤化所煤转化国家重点实验室开放基金(06-603) |
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| 摘 要： | 分别用离子交换法和共沉淀法制备了钴铝复合氧化物负载金催化剂，用于催化分解N2O。离子交换法制备的催化剂活性优于共沉淀法制备的催化剂。对于离子交换法制备的催化剂，考察了金负载量、HAuCl4溶液的预处理方式、焙烧温度对催化剂活性的影响，用BET、XRD、H2-TPR等技术对催化剂进行了表征，优化出了催化剂的最佳制备参数：金负载量1.1%、预调节HAuCl4溶液的pH值至9.0、300℃焙烧。在钴铝氧化物中加入适量的助剂Na，提高了Co3+的还原性和催化剂的低温活性，在此基础上制备的1.5%Na/1.1%Au/Co-Al催化剂的低温活性优于1.1%Au/Co-Al和1.5%Na/Co-Al。
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| 关 键 词： | N2O催化分解 钴铝复合氧化物 负载型金催化剂 制备参数 催化活性 |
| 收稿时间： | 2009-01-11 |
| 修稿时间： | 2009-05-08 |
Preparation of Co-Al mixed oxide supported gold catalysts and their catalytic activity for N2O decomposition |
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| XU Xiao-ling,XU Xiu-feng,ZHANG Guo-tao,NIU Xian-jun.Preparation of Co-Al mixed oxide supported gold catalysts and their catalytic activity for N2O decomposition[J].Journal of Fuel Chemistry and Technology,2009,37(5):595-600. |
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| Authors: | XU Xiao-ling XU Xiu-feng ZHANG Guo-tao NIU Xian-jun |
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| Institution: | Institute of Applied Catalysis;Yantai University;Yantai 264005;China |
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| Abstract: | Au/Co-Al catalysts were prepared by using the ion-exchanged and co-precipitation methods,and their activities for the catalytic decomposition of N2O were tested.BET,XRD,and H2-TPR techniques were used to characterize the catalysts.The results show that the activity of Au/Co-Al catalyst prepared by using ion-exchanged method is higher than that using co-precipitation method.For the catalysts prepared by ion-exchanged method,the effects of preparation parameters,such as Au loading,pretreatment of HAuCl4 solut... |
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| Keywords: | N2O catalytic decomposition Co-Al mixed oxide supported gold catalyst preparation parameters catalytic activity |
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